Chapter 2

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    13 September 1996


    The last two years at school felt really long. But now it's finally over. After so many years of studying, I've made up my mind: I've had enough of books! It's time for me to earn some money and become financially independent. Mum and dad aren't happy with my decision at all! They insist that I sign up for university, but I'm tired of being a financial burden. I need to stand on my own two feet from now on. They asked me to think it over, but I've decided to follow my intuition and already applied for a job as a mechanic. And my first interview went really well! They seem to like me and they've now sent me a mechanical comprehension test to see if I'm suited for the job. I could ask dad for help, but I won't. It was my choice to pursue this path, so I'll handle the difficulties it brings on my own as well.


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    Mechanical comprehension test:



    Q1: Which wire is carrying the most weight?

    MzCZ2wk.png

    1. A
    2. B
    3. No difference
    4. Depends on the time of day



    Q2: Which object will not float on water?

    1. Empty plastic bottle
    2. Wooden pencil
    3. Banana
    4. Scissors


    Q3: Which way will the boat go through the water?

    9p8NvQy.png

    1. A
    2. B
    3. It will continue moving unchanged
    4. It will slow down but without changing direction


    Q4: At which position will the moving pendulum travel the fastest?

    q60UEX3.png

    1. A
    2. B
    3. C
    4. No difference


    Q5: Where is the temperature change highest throughout the day?

    Cnmmjkh.png

    1. A
    2. B
    3. Where both meet
    4. No difference


    Q6: If cog A turns clockwise by 20 rotations, how will cog B turn?

    ZPUVAAg.png

    1. 20 rotations anticlockwise
    2. 20 rotations clockwise
    3. 10 rotations anticlockwise
    4. 10 rotations clockwise


    Q7: To balance the bar, how much weight should be positioned on the left side?

    9wFmQ5X.png

    1. 25 kg
    2. 10 kg
    3. 5 kg
    4. 2.5 kg


    Q8: If block B is moved to the right by 20 cm, by how many centimetres will block A move upwards?

    RCvKTPV.png

    1. 5 cm
    2. 10 cm
    3. 20÷3 cm
    4. 20 cm


    Q9: A block slides down an inclined plane with an acceleration of A. If the mass of the block is doubled, how will this affect its acceleration?

    pLt4KcO.png

    1. Acceleration will still be A
    2. 2 x A
    3. 0.5 x A


    Q10: If the right plunger is moved down by 5 cm, how much will the left plunger move up?

    3zwHMPC.png

    1. Exactly 5 cm
    2. Less than 5 cm
    3. More than 5 cm
    4. It won't move


    Task: Solve the math exercise.

    • 1 point for each correct answer


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  • Q1) 2 - B

    Q2) 4 - Scissors

    Q3) 1 - A

    Q4) 2 - B

    Q5) 1 - A (Sand)

    Q6) 1 - 20 rotations anticlockwise

    Q7) 2 - 10 kg

    Q8) 2 - 20 cm

    Q9) 2 - 2 x A

    Q10) 2 - Less than 5 cm

  • LoL, I'm gonna get fired if I don't score 10 here :D


    Q1 : 2.B

    Q2 : 4.the scissors. too heavy for the contact surface. Haven't often seen bananas float either though :P

    Q3 : 1.A

    Q4 : 2.B (at point A and C, he will be losing speed)

    Q5 : 1.A

    Q6 : 1.20 counterclockwise

    Q7 : 4.2.5kg

    Q8 : 4.20cm

    Q9 : 1.still A. Some fun experiments made for that one a few years back :P

    Q10 : less than 5cm if the drawing's scale is correct (could be calculated if the areas are known)

    Fr-201 Bad Wolf de coeur

    en pause indéterminée - away from the game until next interesting server


    Likely coming back for clash!

  • Q1: 2. B

    Q2: 4. Scissors

    Q3: 1. A

    Q4: 2. B

    Q5: 3. Where both meet

    Q6: 3. 10 rotations anticlockwise

    Q7: 4. 2.5Kg

    Q8: 4. 20cm

    Q9: 1. Acceleration will still be A

    Q10: 2. Less than 5

  • 1 = 3 (No difference)

    2 = 4 (Scissors)

    3 = 1 (A)

    4 = 2 (B)

    5 = 1 (A Sand)

    6 = 3 (10 rotations Anti-Clockwise)

    7 = 4 (2,5 Kg)

    8 = 3 (20cm/3)

    9 = 1 (Acceleration will still be A)

    10 = 2 (Less than 5 cm)


    Dutcher

    NL01 Stoomketel

    If it ain't Dutch, it ain't much!

  • Q1: Which wire is carrying the most weight?

    MzCZ2wk.png



    No difference



    Q2: Which object will not float on water?


    Scissors


    Q3: Which way will the boat go through the water?

    9p8NvQy.png


    A



    Q4: At which position will the moving pendulum travel the fastest?

    q60UEX3.png


    B



    Q5: Where is the temperature change highest throughout the day?

    Cnmmjkh.png


    A



    Q6: If cog A turns clockwise by 20 rotations, how will cog B turn?

    ZPUVAAg.png


    10 rotations anticlockwise



    Q7: To balance the bar, how much weight should be positioned on the left side?

    9wFmQ5X.png


    2.5 kg


    Q8: If block B is moved to the right by 20 cm, by how many centimetres will block A move upwards?

    RCvKTPV.png


    20 cm


    Q9: A block slides down an inclined plane with an acceleration of A. If the mass of the block is doubled, how will this affect its acceleration?

    pLt4KcO.png


    Acceleration will still be A


    Q10: If the right plunger is moved down by 5 cm, how much will the left plunger move up?

    3zwHMPC.png


    Less than 5 cm

  • 1. It seems with no difference (answer 3), but reverse picture is a proof, less spin and so less weight is on wire A (small end of "Bat"). So most weight is on B (Answer 2)

    wbb.rail-nation.com/wcf/index.php?attachment/23426/

    2. Q2: Which object will not float on water?

    1. Empty plastic bottle - "empty" = full of air (then swim)? full of vacuum? If it is hard enough then will float on water (->swim), but if it is weak bottle (Try to suck the air out of the "empty" bottle, and the bottle splasts, and then sink), this is the same as fill it with water, in which the bottle has to swim and the bottle sink
    2. Wooden pencil - swim
    3. Banana - I had to go to the store and buy bananas, and make an attempt... Bananas swim..
    4. Scissors - usually metalic with a piece of plastic - sinking


    3. rudder -> answer 1

    4. From A to B or from C to B is gravity adding power. from B to C or from B to A is removing, so in B is power biggest, and also speed. in A or C is speed smaller, and/or can be 0. on B is pendulum fastest, answer 2

    5. on sand (answer 1), water accumulate heat (or cold) and hold it for a long time, sand accumulate heat (or cold) and releases it soon

    6. 10 rotations anticlockwise (answer 3), each conversion changes direction (3 changes: small>(1)bigger>(2)biggest>(3)bigger)… 20 turns of sprocket (x 5 cog(tooths) is 100 tooths), last sprocket have 10 tooths, so 100tooths/10tooths of last sprocket is 10 turns of last spocket...

    7. lever - twice distance is halved power (weight), so 2,5 kg (answer 4)

    8. pulley… this is not hoist, so 20 cm - answer 4. hoist is below (then it will be 20/3 cm)

    wbb.rail-nation.com/wcf/index.php?attachment/23432/

    9. acceleration is independent to mass or density of block, no change, still A, (answer 1)

    10. volume must be the same, 5 cm of thicker plunger equals less than 5 cm wider plunger (answer 2)

  • So here are my answers:


    Q1: Which wire is carrying the most weight?

    2 - B


    Q2: Which object will not float on water?

    4 - scissors


    Q3: Which way will the boat go through the water?

    1 - A


    Q4: At which position will the moving pendulum travel the fastest?

    2 - B


    Q5: Where is the temperature change highest throughout the day?

    1 - A


    Q6: If cog A turns clockwise by 20 rotations, how will cog B turn?

    3 - 10 rotations anticlockwise


    Q7: To balance the bar, how much weight should be positioned on the left side?

    4 - 2,5 kg


    Q8: If block B is moved to the right by 20 cm, by how many centimetres will block A move upwards?

    2 - 10 cm


    Q9: A block slides down an inclined plane with an acceleration of A. If the mass of the block is doubled, how will this affect its acceleration?

    1 - Acceleration will still be A


    Q10: If the right plunger is moved down by 5 cm, how much will the left plunger move up?

    2 - Less than 5 cm

  • LYNA


    PT02 Fornalha


    =======================================






    Mechanical comprehension test:



    Q1: Which wire is carrying the most weight? B





    MzCZ2wk.png


    1. A
    2. B
    3. No difference
    4. Depends on the time of day







    Q2: Which object will not float on water? Scissors


    1. Empty plastic bottle
    2. Wooden pencil
    3. Banana
    4. Scissors







    Q3: Which way will the boat go through the water? A



    9p8NvQy.png

    1. A
    2. B
    3. It will continue moving unchanged
    4. It will slow down but without changing direction







    Q4: At which position will the moving pendulum travel the fastest? B



    q60UEX3.png

    1. A
    2. B
    3. C
    4. No difference






    Q5: Where is the temperature change highest throughout the day? A

    Cnmmjkh.png

    1. A
    2. B
    3. Where both meet
    4. No difference






    Q6: If cog A turns clockwise by 20 rotations, how will cog B turn? 10 rotations anticlockwise


    ZPUVAAg.png

    1. 20 rotations anticlockwise
    2. 20 rotations clockwise
    3. 10 rotations anticlockwise
    4. 10 rotations clockwise







    Q7: To balance the bar, how much weight should be positioned on the left side? 2.5 kg


    9wFmQ5X.png

    1. 25 kg
    2. 10 kg
    3. 5 kg
    4. 2.5 kg






    Q8: If block B is moved to the right by 20 cm,

    by how many centimetres will block A move upwards? 20 cm

    RCvKTPV.png

    1. 5 cm
    2. 10 cm
    3. 20÷3 cm
    4. 20 cm






    Q9: A block slides down an inclined plane with an acceleration of A.

    If the mass of the block is doubled, how will this affect its acceleration? 0.5 x A


    pLt4KcO.png

    1. Acceleration will still be A
    2. 2 x A
    3. 0.5 x A





    Q10: If the right plunger is moved down by 5 cm,

    how much will the left plunger move up? Less than 5 cm


    3zwHMPC.png

    1. Exactly 5 cm
    2. Less than 5 cm
    3. More than 5 cm
    4. It won't move